Time-switch mechanism



Aprii 19, 1927. 1,625,339

H. D. THOMAS TIME SWITCH MECHANISM Filed Dec. 10. 1923 INVENTORfimrmfi/mar I 40 I ATTORNEY Patented Apr. 19, 1927.

UNVTEE) S'TATiig PATENT OFFKIE.

HAROLD DAVID THOMAS, OF NEVT YORK, N. Y., ASS IGNOR TO AUTOMATIC SHOESHINER CORPORATION, OF NEW YORK, N Y., A COEPORATIUN 01F IIEW YOERK.

TIME-SWITCH MECHANISM.

Application filed December 10, 1923. Serial No. 679,652.

This invention relates to time switch mechanism.

The object of the invention is to provide a simple mechanism which isrendered operable by a coin or token which will close a switch to permitthe electrical operation of a driven part for a predetermined time andthen open the switch to stop the operation of such part,in this instanceshown as arotary brush.

The more specific object of the invention is to provide a properlybalanced coinactuatcd lever so that certain action is assured. Thespecific form of lever shown in this case comprises two parts co-actingwith each other, one part weighted and balanced and provided with arounded linger and the other part being disposed in the path of movementof the first-named part. A further object is to provide means on boththese parts adapted to limit movement of the other part.

In the accompanying drawings, forming part of this application, isillustrated a form f embodiment of the invention, and in which drawingssimilar reference characters designate corresponding parts and in which:

Figure 1 is an elevation looking at the inside of a casing cover,arranged to support the parts;

Figure 2 is an elevation of the right hand side of the parts shown inFigure 1, the casing cover being shown in section;

Figure 3 is a perspective of a coin-actuated two-part lever;

Figure a is a side elevation of the switch opening mechanism just aftersaid mechanism conunences to operate; and

Figure is an elevation of the switchactuating mechanism just. after thecoinactuated lever has been operated.

Referring to the drawings, 1 designates a suitable support, usually thehinged door to a vertically arranged casing of a common or ordinaryform. The outer portion of the casing 1 is provided with a hood 2 inwhich is housed a cylindrical rotary brush 3 mounted upon a shaft 4 andarranged to be rotated by a geared pulley 5 driven by a double belt 6and an upper pulley 7 on a motor 8, the latter being carried by thecasing door 1.

Suitable electrical conductors 9 extend from the motor to a knife switch10, the

latter being mounted on an insulated block support 11 carried by thedoor 1.

Carried by the upper side of the knife switchlO is a bent arm 12, oneend of which is fixed to the knife switch and the other free end ofwhich terminates in a linger 13. The linger 13 has an upturned end so asto present an inclined face to another moving part hereinafter describedand has secured thereto one end of a spring 1 1, the other end of whichis secured adjacent one end of a rocker arm 15. The rocker arm ispivoted to a support at 16, to permit a rocking movement of the arm 15under the action of the spring 14 and of a crank hereinafter described.A lever 17 is provided with a slot 18 in its upper end through whichprojects a stud 19, the stud being secured on the upper end of therocker arm 15, and the lever 17 is provided with a shoulder 20 arrangedto ride against the pivot 16 which forms a fulcrum therefor.

The crank 21 has its free end pivoted to the lower end of the lever 17,as at 17 and is arranged to be operated by suitable gears 22 driven fromthe brush shaft in any suitable and common way.

The rocker arm 15 is provided with a shoulder or boss 23 arranged sothat when the rocker arm is actuated upward the shoulder contacts with aroller 24 disposed on the free end of a bent lever 25 which is pivotedas at 26 and is provided with an oppositely bent free end 27.

T he free end 27 of the lever 25 is disposed over and in the path ofmovement of the curved face 28 of a lever 29 which is'pivoted as at 30and which is provided with a spatulatc extension 81.

In order to perfectly balance the lever 29, a weight 32 is disposedunder the curved face 28 and in order to limit the movement thereof abent guard 33 is secured on the lever 25 and projects beneath the curvedportion of the lever 29.

A suitable coin chute 3% is disposed adjacent the mechanism alreadydescribed so that 'ts lower end terminates above the normal position ofthe spatulate end 31 of the lever 29.

A small spring 35 has one end connected to the knife switch and itsopposite end secured to the bent arm 12 which is slightly resilient andwhich is provided with the shoulder 36 end upiard so that it contactswith the and airfare ot the bent portion :2? ot the lever :2. rockingthe same on its pivot 26 and removing the roller "24 from the shoulder23. 'lhe rocl-zer arm lieing thus rel used by the rcmoral ol the roller:E-l: from the shoullcr :33 is married upward by the action oil" hespring H: and the upper end ol' the lever ii is removed lrom beneath thebent. linger 1 oil the arm E2. permitting the downward pull of thetension oil the spring it to pull M10 ltillli switch in closed position.is soon i cail'e switch ll) is closed and the curt; ed on. the motor 5-;commences to 'ving the brush I; and its shalit so the a: s 232 aredriven and the shaft i the cr: nh 21 is rotated. "the rotation of thecr: oh 2i carries with it the lower end 01 the lever ii. the shcmlder ofwhich riding armnnl the pivot 16 rocks the arm 15 back to the dottedline position shown in Figure in the coarse o t' which operation theripper cud oi the lever 17 again rides under the linger 1 and overcomesthe tension of the spring ll. This movement ot the lever 11.? alsoforces the bent n'ieniher upward to the dotted line position oi? Figureand further upward so that the shoulder 36 strikes the projecting :t'reeend at the switch 10 and forces it nearly clear. This action produces atension on the spring and the member 1i. is held from downward movementthat the tension of the spring 35 snaps the switch cntirclv clearquickly so to avoid sparle inn. In the meantime the rocker arm 17 beingbrought downward the roller 24.- again sea i self over the shoulder :23.being rocked to this position by the weight (it its bent. end 97. andwhen in this position maintaining the rocker arm in its down\ andposition.

lilaving thus fully described the invention, what is claimed as new anddesired to be secured by Letters Patent is:

1. In a device of the character described. the combination comprising aknife switch. a motor in circuit with the s witch. means for operatingthe switch and a coin-actuated means for starting the operatin meansconimamas) prising a two part element having its parts mounted onseparate pivots, one part being mlapted to be engaged by a coin and theother part engaging and controlling the switch operating means and meansfor limitin the movement of the two parts with relation to each other.

:2. lo a device of the cha acter described,

the combination comprising a knife switch, a motor in circuit with theswitch, means for operating the switch, and coin-actuated con trollingmeans for the operating means comprising a pair of pivoted leversadapted respectively to engage the switch operating means and to beengaged by a coin one 01 which levers is provided witha projecting partadapted to interlock with the other Unit limit in: nmvemmit.

i a evice ot the character described. ntrol element comprising a.pivoted lever having a bent end and :ulapted to on ore snvihvh operatingmeans. a roller carried the bent end, and a second pivoted lever iosedin the path of mm'ement of one end he l'irst lever and adapted to beengaged h a coin.

r. In a device of the cha 'acter described. the control elementcomprising a pair of iivoted levers. one being adapted to engage 11 dcontrol switch operating means placed n the path oi. movement oil. theother and one of the levers being balanced and adapted to he en 'ged bya coin and novided with a carved end.

5. ln a device of the character deitcriljied. the control element("onrprising a pair of pivotcd levers. one being adapted to be engagedby a coin and placed in the path of movemem ot the other. the latterbeing adapted to engage and control switch operating means. a weightdisposed on one of the levers. and means tor limiting the movement olthe lerersv with relation to each other.

(i. In a derice ot the character described. a control element comprisinga pair of pivoted levers having their adjacent ends disposed inidentical vertical plane: and a projecting member on one oi the leversarranged to cxtend under the other lever. one at the levers beingadapted to engage switch ope ating" means and the other being; adaptedto be enhugged by a coin.

thinned at New York. New York, U. A... December, 192

I-LstROLl') DAVID THOMA F5.

